#include<stdio.h>
int main()
{
    int a=2,i;
    printf("Game begin:\n");
    while(a>0){
        do{
            printf("How many sticks do you wish to take(1~%d)?",a>4?4:a);
            scanf("%d",&i);
        }while(i>4||i<1||i>a);
        if(a-i>0)printf("%d sticks left in the pile.\n",a-i);
        if((a-i)<=0){
            printf("You have taken the last sticks.\n");
            printf("*** You lose!\nGame Over.\n");
            break;;
        }
        else
        printf("Computer take %d sticks.\n",5-i);
        a-=5;
        printf("%d sticks left in the pile.\n",a);
    }
}